Enhancing the Thermo-Mechanical Properties of Thermoplastic Starch Films Using Rice Straw Fibers as Reinforcement

Zeleke, Tamene Simachew; Yihun, Fantahun Aklog; Ayana, Misganaw T.; Kassa, Mulugeta Tesemma; Alemante, Mekdes Fentabil

doi:10.1007/s42250-023-00584-9

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…It demonstrates that the ller CNCs reduce of composites light transparency. The CNCs ber thickness and their homogeneous dispersibility in water and aloe vera gel matrix greatly affected composites' light transmittance [27]. 3 wt.% CNCs containing composite dispersion had low ber aggregation and better compatibility with the aloe vera matrix resulted in better transparency.…”

Section: Resultsmentioning

confidence: 99%

Improving thermal stability of biopolymer nanocomposite of aloe vera gel reinforced with Mango seed shell cellulose nanocrystals and Evaluating Its Anti-bacterial activity

Turunesh

Yihun

Zelekew

et al. 2023

Preprint

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Renewability, biocompatibility, biodegradability and eco-friendly aloe vera gel biopolymer reinforced with cellulose nanocrystals materials improved the thermal stability of biopolymer nanocomposite. Aloe vera gel powered was extracted from leaves by alcohol precipitation method, and cellulose nanocrystals were prepared by sulfuric acid hydrolysis of purified mango seed shell cellulose and were used as reinforcement with aloe vera gel by solution method under strong stirring and addition of glycerol as cross-linking agents. Mango seed shell cellulose nanocrystals and the nanocomposite were characterized with ultraviolet visible, fourier transform infrared spectrophotometer, thermogravimetric analysis, differential thermogravimetric analysis, scanning electron microscopy and antimicrobial properties of the nanocomposite were also measured. A significant enhancement of the thermal stability was achieved with a small loading of cellulose nanocrystals to the aloe vera gel matrix. The results of thermal properties show that 3 wt.% CNCs containing nanocomposite have higher thermal stability among other wt.% CNC. The improvements in thermal properties suggest a close interaction between filler and matrix as shown from FTIR results increasing CNCs decreases the intensity of the peaks. The SEM image shows that good improvement in morphology and good dispersion cellulose nanocrystals in aloe vera gel matrixes. Even though, all synthesized biopolymer nanocomposites show a significant antibacterial activity even at lower concentration; 3 wt. % CNCs containing nanocomposite has higher antibacterial activity than the others.

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Section: Resultsmentioning

confidence: 99%

Improving thermal stability of biopolymer nanocomposite of aloe vera gel reinforced with Mango seed shell cellulose nanocrystals and Evaluating Its Anti-bacterial activity

Turunesh

Yihun

Zelekew

et al. 2023

Preprint

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“…Cellulose nanofibers and nanocrystals can be successfully applied to enhance starch-based materials' properties [11]. Zeleke et al have reported the usage of rice straw cellulose fibers to reinforce thermoplastic starch-based films for better industrial applications [12]. According to [12], 10 wt% cellulose nanofibers were the optimum concentration for the composite film, compromising the properties and the transparency.…”

Section: Introductionmentioning

confidence: 99%

“…Zeleke et al have reported the usage of rice straw cellulose fibers to reinforce thermoplastic starch-based films for better industrial applications [12]. According to [12], 10 wt% cellulose nanofibers were the optimum concentration for the composite film, compromising the properties and the transparency. Above 10 wt%, the fiber aggregation in the polymer matrix was observed.…”

Section: Introductionmentioning

confidence: 99%

Study on the Printability of Starch-Based Films Using Ink-Jet Printing

Żołek-Tryznowska,

Piłczyńska,

Murawski

et al. 2024

Materials

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Starch-based films are a valuable alternative to plastic materials that are based on fossil and petrochemical raw resources. In this study, corn and potato starch films with 50% glycerol as a plasticizer were developed, and the properties of films were confirmed by mechanical properties, surface free energy, surface roughness, and, finally, color and gloss analyses. Next, the films were overprinted using ink-jet printing with quick response (QR) codes, text, and pictograms. Finally, the print quality of the obtained prints was determined by optical density, color parameters, and the visual evaluation of prints. In general, corn films exhibit lower values of mechanical parameters (tensile strength, elongation at break, and Young Modulus) and water transition rate (11.1 mg·cm−2·h−1) than potato starch film (12.2 mg·cm−2·h−1), and water solubility is 18.7 ± 1.4 and 20.3 ± 1.2% for corn and potato film, respectively. The results obtained for print quality on starch-based films were very promising. The overprinted QR codes were quickly readable by a smartphone. The sharpness and the quality of the lettering are worse on potato film. At the same time, higher optical densities were measured on potato starch films. The results of this study show the strong potential of using starch films as a modern printing substrate.

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